the Galaxy S4 looks extremely similar to the Galaxy S3 in design. what the differ is, it's just a bigger version. It keeps the rounded corners but has a slightly squarer look to it like the Galaxy S2.According to Samsung's specifications the Galaxy S4 is marginally smaller than the Galaxy S3 despite it's larger screen. The two are the same height at 136.6mm but the Galaxy S4 is 69.8mm wide compared to 70.6mm. It's also thinner and lighter than its predecessor at 7.9mm and 130g against 8.6mm and 133g.
Samsung used its own Exynos 4 Quad processor for the Galaxy S3, a quad-core chip unsurprisingly. It's clocked at 1.4GHz and is based on the ARM Cortex-A9 architecture.The Galaxy S4 outdoes this with the Exynos 5 Octa processor which Samsung announced at CES. It's the first smartphone to boast an 8-core chip. It consists of four Cortex-A15 cores clocked at 1.6GHz for performance while the remaining four are Cortex-A7s clocked at 1.2GHz for less demanding tasks and power saving.The RAM has also been doubled from 1GB to 2GB.
